关键词: 选择性催化还原;Mn-Ce-W/TiO2催化剂;制备参数

Abstract: A series of Mn-Ce-W/TiO2 catalysts were prepared by impregnation method.The influence of preparation parameters such as impregnation step, impregnation sequence, W content and calcination temperature on denitration performance of catalysts was studied.The results show that the addition of W can stabilize the crystal structure of TiO2 and improve the phase transition temperature of TiO2, which can restrain the transition from anatase to rutile, and improve the denitration efficiency of catalyst.The catalyst, which the order of impregnation is W before Mn and Ce, the addition of W is 5%, and the calcination temperature is 450 ℃, has the best denitration efficiency.

Key words: selective catalytic reduction;Mn-Ce-W/TiO2 catalyst;preparation parameter